@article{JTNB_2000__12_2_399_0,
     author = {Cougnard, Jean},
     title = {Construction de base normale pour les extensions de $\mathbb {Q}$ \`a groupe $D_4$},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {399--409},
     publisher = {Universit\'e Bordeaux I},
     volume = {12},
     number = {2},
     year = {2000},
     mrnumber = {1823192},
     zbl = {01626652},
     language = {fr},
     url = {http://archive.numdam.org/item/JTNB_2000__12_2_399_0/}
}